Here's some pics. The CPU pic with the white clamp-on RFI filter on the red and black wire pair (I assume the display power connector) is my GB Pro. The pic with the red and black wired dangling out in space is my GoT pro that now suddenly works a helluva lot better. The red and black wires were bundled in the cable bundle going around to the right side of the CPU board.
My Kiss pro has no filter and I've never had these types of problems out of it. But after about a year on location my GoT pro started acting weird. If you look above in this thread I spent $500 for one each of the node boards and systematically swapped them out with no positive results. Replacing the SD card seemed to help for a few months at a time (??) but it would always go back to odd behavior such as mystery switch hits, i.e. starting a Blackwater multiball without hitting the ramp and when you entered a house mode it would often just keep the ball in the sword lock without releasing it and without providing a new ball if you had just locked a ball. Most of these problems were perfectly repeatable every game.
I played three full games today and I got one mystery ramp hit in a BW multiball and that was it. So its back to behaving good enough for location and hopefully the filters will completely fix it.